Della Porta, D., & Keating, M. Approaches and methodologies in the social sciences: A pluralist perspective. Cambridge University Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDella Porta, Donatella, और Michael Keating. Approaches and Methodologies in the Social Sciences: A Pluralist Perspective. Inglaterra: Cambridge University Press.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDella Porta, Donatella, और Michael Keating. Approaches and Methodologies in the Social Sciences: A Pluralist Perspective. Cambridge University Press.
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